Fastener for the m eeti ng-rai ls of sashes



(No Model.)

0. H. FOSTER. FASTENER FOR THE MEETING RAILS 0F SASHES.

No. 402,816. Patented May 7, 1889.

FFICE.

CHARLES H. FOSTER, OF ALAMEDA, CALIFORNIA.

FASTENER FOR THE MEETING-RAILS OF SASHES.

SPECIFICATION forming part of Letters Patent No. 402,816, dated May '7, 1889.

- Application filed February 6, 1889.

To all whom, it may concern.-

Be it known that 1, CHARLES H. FOSTER, of the city of Alameda, Alameda county, State of California, have invented an Improvement in Adjustable Sash-Locks; and I hereby declare the following to be a full, clear, and exact description of the same.

h'lyinvention relates to a sash-lock for windows.

It consists of a cam pivoted horizontally upon the top of the lower sash and having a V-shaped or beveled periphery, correspondingly-shaped catches upon the vertical sash with which it may be engaged, a guard projecting over the opening or space between the two sashes to protect the cam from being moved from the outside, and a stop by which the movement of the handle in the direction of the window is limited.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a perspective view showing the application of my device with the window locked. Fig. 2 is a plan or top view showing the cam turned so as to unlock the window. Fig. 3 is a vertical section of the window-sashes with my invention in place.

A is the upper and B is the lower sash of a window. Upon the lower sash is pivoted a cam or eccentric, 0, having the handle or extension D, by which it is turned. The curved face of the cam or eccentric is adapted to engage with horizontally grooved or channeled lugs E, which are secured upon the vertical stile of the upper sash, as shown. In order to insure the prompt engagement of the cam with these notches the curved face of the cam is made beveled or V-shaped, as shown at c, and the channels or grooves in the plates E are also made V-shaped, so that they diverge considerably at the top, thus securing the proper guidance of the cam in the slot when it is turned to lock the window in any desired position.

In order to protect the cam from the opera tions of persons on the outside, who might attempt to turn it and unlock the window by means of a tool inserted through the narrow crack between the sashes, I have shown a plate, F, secured to the top of the lower sash,

Serial No. 298,868, (No model.)

extending over the crack between the sashes and close beside the line of the grooved plate E. This plate F is in the present case shown as being secured upon the top of the lower sash in such a position that the pivot-pin of the cam passes through'one end, while the other end extends out over the crack between the sashes and is turned over so as to inclose the V-shaped edge of the cam, which is thus fully protected from being tampered with from the outside.

WVhen the window is to be unlocked, it is simply done by pushing the handle D around, so as to release the notches or channels of the upper sash from the cam, when the upper or lower sash may be moved at will in either direction.

In order to prevent the handle D from being turned so far asto intercept the sashes in their movements, I have shown a projecting lug, G, fixed to it in such a position that when the handle is turned around the lug will strike against the upturned edge of the stop or plate F, and thus prevent the handle from being turned too far.

The cam is made in such a manner that it may be placed upon either side of the window which is most convenient by simply turning it over and moving it from one side tothe other. The locking-plates may be attached to the vertical side stile of the window-sash upon either side to correspond with the posi tion of the cam. As many of these may be employed upon the sash as may be desired, and when the window is locked it will be im possible to move either the upper or the lower sash from its position.

This device is especially useful for the purpose of locking and holding the upper sash when it has been dropped and partially open, and it enables me to lock one or both sashes at any point when partially open.

I do not claim, broadly, a locking cam or eccentric for a window; but

WVhat I do claim as new, and desire to secure by Letters Patent, is

1. The cam or eccentric pivoted horizontally upon the top and at one side of the lower sash and having the double-inclined V-shaped periphery, in combination with the plates secured to the upper sash and hax'ing the wide V-shaped notches which are engaged by the (an, substantially as described.

2. The cam pivoted horizontally upon the top of the lower sash and having the inclined V shaped periphery, the correspondingly grooved or notched locking-plates secured to the upper sash, the inclosing' guard or plate F, and the lug or projection from the handle of the eam, adapted to arrest the cam by con- IO tact with the guard-plate, substantially as herein described.

In witness whereof I have hereunto set my hand.

CHARLES H. FOSTER. Vitnesses:

S. H. NOURSE, II. 0. LEE. 

